Hey guys, I am pretty confused with this problem. I calculated the pH and got pH zero, so isn’t the pOH supposed to be 14? The answer key says it is 13. Can someone pls kindly explain to me! Thanks ahead

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Hi!

HCl ----- H⁺ + Cl⁻

n(HCl)=72/36=2

ratio 1:1 HCl:H⁺

So n(H⁺)=2

C=n/V=2/2=1

[H⁺]=1 so pH=1 i believe?

pOH=14-1=13

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Hey Juliette! Thank you for replying❤️. I was thinking since pH = -log [H+] and conc of H+ is 1 molarity, and one is ten to the power zero, pH will be zero :(( , can we not take pH as zero in this problem?

Actually you’re right it should be 14

Ari’s trick: C=1,0 one zero after the comma so pH=0

also i found this video saying =0: What is the pH of 1.0 M HCl? - YouTube

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Hey Juliette! Thank you very much for the help and also the video

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